Room thermostat



Oct. 16, 1934. -v. J. EVANS ET AL 1,976,930

- ROOM THERMOSTAT w Filed Jan. 2 1930 Patented is, 1934' v y 1,976,930

* UNITED STATES PATENT OFFICE I l e 1,916,930 1 V I;

i noon 'rnsamosrs'r' Vincent J. Evans, Lakewood, and Leger S.

' (Jutonzuay, Cuvshoxa Fall's, Ohio, assignors to The Patrol Valve Company, Cleveland, Ohio, a corporation of Ohio Application January 2, 19', Serial No. 411.913 16 Claims. (01. 230-101 This invention relates to thermostatic devices reception of a pin 9 which is carried by the leand in particular thermostatic regulators adaptver 10. The lever 10- is pivotally carried by the ed to respond to atmospheric temperature bracket 17 by memo! the stud.12 which furchanses of the surrounding space commo ther provides a pivotal support for the arm 11,

referred to as room thermostats. the opposite endot which carries a thermostatic on One of the objects of this invention is to strip 13 secured thereto in any suitable manner provide a generally simplified thermostat oi. such-as by screws 14. The lever and arm 11 the type disclosed, having a relatively small are adjustably connected to each other by number of parts which are inexpensive to manumeans of the threaded yoke which is pro- 10 facture and so arranged that the assembly of vided with lock nuts 16. these parts may be readily accomplished wit with the arrangement shown, a considerable relatively inexpensive labor. movement 0! the upperend of the lever 6 will A further object of this invention is to proadjust the position of the upper'end oi thether- I vide a room thermostat in which all or the opmostatic element 13 a small amount in order to 15 crating parts of the thermostat are adapted to vary the temperature at which this elementopbe assembled as a complete unit separate from eratesthe valve. The upper end of the bracket the casing of the thermostat, said unit including 17 is formed so as to provide a valve casing. 18 a generally simplified valve structure and a having outlet andinlet passageways 19 and 20 thermostatic actuator adapted to be manually respectively which connect-with the communi- 20 adjusted to vary the operation of the device. eating geway 21. The passageway 21 is 7 5f cured to the device in any-suitable manner such stance is termed from a 5 lever 8 is is providedwitha slots for the perature of the strip 'Stated in general terms our invention conadapted to receive an elongated and removable sists in the provision of a small inexpensive cylindrical valve seat 22 upon which is carried a thermostatic valve provided with an adjustable spring 23. The 8101 823 is adapted to engage thermostatic actuator which may be set to open a flexible diaphragm 24 which is secured to the 26 and close the valve at various pro-determined open end of the valve casing 18 in sealing relatemperatures. tion therewith by means of the apertured nut With these and other objects in view, the in- 25. A pin 26 having aspherical head formed on vention consists in the novel I construction. arone end thereof is carried in the aperture of the rangement and combination of parts hereinaiter nut 25.

30 described, illustrated in some of its embodiments Th m 3 t a a, al h ad a i valve '85 in the accom 's draw d Particularly stem and is adapted to he engaged by the'ther-' pointed out inthe appended claims e mostatic. strip 13 .inefieeting the operation' oi In the drawing: Figure l is a front elevational thewalve symmm th i h ad again t th view of our improved thermostat. Figure 2 is an diaphr 2% which inturn' is pressed over the 5 enlarged View to F e h t opening of the valve seat 23 closing thesamethermostat cover rem ved. Figure 3 is. a side Upon a predetermined change in temperature evat onal v w i1 in section of t e h othe thermostatic strip 13 is withdrawn from enstat. Fme s is a sectional view taken on line gagement with the pin 26 the flexible dia- 44 of Fi showing the arrangement'oi the phragm 24 is moved away from the valve seat so valve parts, and Z 5 is a sectional view 22 by sp 23 and in thisway the valve is taken on line 55 of Fi ure 3. f opened. By moving the adjustment indicator 3 Our improved thermostat is provided with a to the indicated on the scale it is pos suitable cover 1, vine a thermometer 2 fixed sibleto cause the thermostatic strip 13 to open to the front t o i all ius ns level 3 and close the valve at the various indicated'teme5 accessible firm the exterioroi thethermostat peratures. In general these valves have'been for the p an of adjusting the same so as to' mum to open andclcse the valve with a. -temoperate at various predeterminedtemperatures. peraturevariationoi from 1 to 2 F. whichis The indicat or adiustinglever 3 is positioned amply cient sensitivity for most purposes. in front of an indicating :scale 4. which is see thermticstripis in the presentinwi l; metalsheet as by means an H one side oi which has a'higher coemcientooi- Theadjustim lever is iormsa part of the le thermal con than the other. "Thestrip ver e which is'pivetally connected tothe bracket 13 is secured in place, withits. expansion.

17 by means of the stud? carried therein, The, side to the. left so. that an increase in the te nri.

. el t WWW 30 1110 the right. Where it is desired to operate the valve in a reverse manner, the strip 13 would be formed so that its low expansion side would be to the left and an increase in its temperature would cause it to warp to the left'instead of the right as explained above.

The thermostat case 1 is provided with a plurality of openings 33 in order to permit air circulation through the case in order to quickly eflect the operation of the thermostatic element- 13 upon atmospheric temperature changes. The

valve body extension '17 is provided with threaded holes 31 and 32 for the reception of the studs 7 and 12. The cover 1 is secured to the back 27 of the thermostat by means of the spring clips 29 which are received in the openings 30 and which may be released upon pressing the knobs 28 carried thereby. In this manner the cover 1 may be removed from the thermostat back exposing all of the elements of the thermostat to view. The operative parts of the thermostat are carried upon the thermostat back 27 by means of the threaded conduits 19 and 20 which are secured in place to the back of the case by means of the nuts 34. The lever 6 and the lever 10 and arm 11 are held in place on the studs 7 and 12 by means of the springs and 36 and their retaining washers 37 and 38.

The manufacture of this device is considerably simplifled by reason of the fact that all of the operating elements of the valve may be assembled and adjusted as a unit separate from the thermostat cover 1 and its back 27. In assembling the device the yoke 15 is adjusted in the arm 11 so that the thermostatic strip 13 engages the valve stem 26 and just closes the -valve when the indicator 2 is set at the position on the scale 4 corresponding to the temperature of the room in which this operation is taking place.

are presented for purposes of explanation and illustration and that various modifications of saidapparatus and procedure can be made without departing from our invention as defined in the appended claims.

Having thus described. our. invention, whatyve claim isi 1. In a. thermostatic valve, valve mechanism comprising a body with a side opening and inlet and outlet passageways having a communicating passageway therebetween, a removable valve seat adapted for reception in said communicatin passageway, a flexible diaphragm, an apertured nut for clamping said diaphragm in sealing relation over said side opening, a pin slidably carried in the aperture of said nut to-engage said diaphragm to cause it to cover said valve seat. and thermostatic means for electing the operation of said pin. V

2. In a thermostatic valve, valve mechanism comprising a body with a side opening and inlet and outlet passageways having a communicating passageway therebetween, a removable valve seat valve body having communicating inlet and outadaptd for reception in said communicating passageway, a flexible diaphragm, a spring carried on said valve seat engagingsaid diaphragm to urge it away from said valve seat, an apertured nut for clamping said diaphragm in sealing relation over said side opening, a pin slideably carried in the aperture pf said nut to engage said diaphragm to cause it to cover said valve seat, and thermostatic means for effecting the operationof said pin.

3. In a thermostatic valve, valve mechanism comprising a body with inlet and outlet openings and a communicating passageway therebetween, a removable valve seat positioned in said passagew'ay, a flexible diaphragm secured in sealing relation over an opening formed in said body adjacent to said valve seat, spring means to urge said diaphragm away from said valve seat, and thermostatic means to press said diaphragm into engagement with said seat to effect the closing of said valve.

4. In a thermostatic valve in combination, a valve body having communicating inlet and outlet openings and a valve port located therebetween, means cooperating with the port of said 106 valve body for controlling fluid flow therethrough, a thermostatic actuator for said means. an arm extending alongside of said thermostatic actuator and joined at one end to an end of said actuator, a pivotal mounting for the other end of said arm, and a fulcrum lever operatively associated with said arm for adjusting the position of said thermostatic actuator.

5. In a thermostatic valve, in combination, a no let openings and a valve port located therebetween, means cooperating with the port of said valve body for controlling fluid flow therethrough, a thermostatic actuator for said means, an arm extending alongside of said thermostatic actuator and joined at one end to an end of said actuator, a pivotal mounting for the other end of said arm, a fulcrum lever for adjusting the position of said thermostatic actuator, and means for connecting the intermediate portion of said arm to said fulcrum lever.

6. In a thermostatic valve, in combination, a valve bo'dy having communicating inlet and outlet openings and a valve port located therebetween, means cooperating with the port of said valve body for controlling fluid flow therethrough, a thermostatic actuator bar for said means. an arm extending alongside of said thermostatic actuator bar-"and joined at one end to an end of said actuator bar, a pivotal mounting for the other end of said arm, a fulcrum lever for adjusting the position of said actuator bar, and means for connecting said arm to the fulcrum point of said lever.

7. In a thermostatic valve, in combination, a

cast metal valve body having an elongated supporting member integrally formed therewith, a valve member extending from the valve body, a thermostatic actuator bar for said valve member adjustably carried by the supporting member of said body at a point intermediate the ends of the supporting member, an adjustment lever for said actuator pivotally mounted at one of its ends on the supporting member, and means for connecting said thermostatic actuator bar to said lever at a point adjacent the pivotal mounting of said lever.

3. In a thermostatic valve, valve mechanism comprising a body with a side opening and inlet and outlet openings having a communicating 150 ewa y therebetween, a valve seat located an arm attached at one of its ends to said valve in the communicating passageway of said body, a flexible diaphragm. an apertured nut for clampingsaid diaphragm in sealing relation over the side opening of said body, a pin slideably carried in the aperture of said nut to cheese said diaphragm to cause it to cover said valve seat, and thermostatic means for effecting the operation of said pin. v

9. In a thermostatic valve, valve :11 comprising a body with a side opening and inlet and outlet openings having a communicating passageway therebetween, a valve seat located cover said valve seat, and thermostatic meansfor effecting the operation of said pin.

10. In a device of the kind described, a valve, an actuator for said valve, an arm extending alongside of said actuator and joined at one end to an end of said actuator, a pivotal mounting for the other end of said arm and a fulcrum lever associated with said arm for adjustingthe position of said actuator.

11. In a device of the kind described, a valve, an'actuator for said valve, an arm extending alongside of said actuator and joined at one end to an end of said actuator, apivotal mounting for the other end of said arm and a fulcrum lever associated with said arm for adjusting the position of said actuator, and means for connecting the intermediate portion of said arm to said fulcrum lever.

12. In a device of the kind described, a valve,

7 an actuator for said valve, an arm extending to actuate said valve and extending from the valve end toward the other end of the base,

member and pivoted to the base at a pointintermediate the ends thereof, and an adjustment lever pivoted to the base and connected to said am at a point intermediate its pivot and its connection to the control element;

'14:. In a device of the kind described, a base, a valve at one end thereof, a control member to actuate said valve and extending from said valve toward the other end of the base, an arm connected at one of its ends to said control member to move same, and pivoted to thebase ata point intermediate the ends thereof, a scale of adjustments adjacent the valve; a lever traversing said scale, extending toward the other end of the base, and pivoted thereto, and fulcrum means between said arm and said lever whereby adjustment of ,saidlever moves. the

arm and consequently re said control member. g I

15. In a device of the kind described, a base, a valve at one end thereof, a control member to actuate said valve and extending from said valve toward the other end of the base, an arm connected at one of its ends to said control memher to move same, and pivoted to the base at 'a point intermediate the ends thereof, a scale of adjustments adjacent the valve, a lever traversing said scale, extending toward .the' other end of the base, and pivoted thereto, and ful-- to the control element at apoint remote from the valve, an adjusting levenpivoted to the base, and means forming a fulcrum between said arm and said lever, said means including a secward the oth$ end of the base, an arm secured 0nd lever pivoted to the base intermediate the ends thereof and having a connection with said arm and a connection with said first lever,

whereby adjustment of said first lever will move.

- by the following order, said second lever, said arm, and said control element.

' VINCENT J. EVANS.

LEGER 8. CABTONGUAY. 

